My group was playing The Hoard of the Dragon Queen and we got to the hunting lodge. Half of us were standing in the front, trying to discern if it was occupied, the rogue was sneaking around the back, the ranger and druid were climbing/flying onto the roof. After twenty minutes of us poking around and asking questions our DM was like, "You guys have tried just about everything but going up and knocking on the door."
"Well duh, that's how people get killed."

At the moment we are also playing The Hoard of the Dragon Queen in my group. We are a lot of newcomers, and none of us are very experienced, except the DM.
I think he hates us sometimes. Most of us are really suspicious, of everything he throws at us.
New room, check for traps. Locked door, check for traps. Bowl of cereal, check for traps. There was actually poison in the cereal... Our dwarf fighter has also fought a blue lizard guy 4 times in one-on-one combat. We were meant to meet him twice.
My character, a halfling bard, is known as the horny, diplomat, that fights by insulting people. **** yeah, vicious mockery
I also seduced a cultist. Apparently, he saw my friendly nature as a bit more than that. I tried to explain him, that I was just being friendly. The DM made me roll. Natural 1.

That's the thing though. I'm not opening the door. The person inside is opening the door. They are free to kill themselves with the trap. Or they could just not open the door, at which point it is time to talk.

Only count 2. The three guys at the middle are the Shadows of Yarnam, which sprout snakes(the living kind). The one above them is Darkbeast Parl, a real quadruped skeleton. And above them is the King of Cainhurst, who is also skelington.